| 纳米SiO2包覆微晶纤维素对PBS/PLA复合材料性能的影响 |
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| 引用本文： | 王瑶,何连诚,柴菁珊,牛丽姣,罗义琳,张秀成.纳米SiO2包覆微晶纤维素对PBS/PLA复合材料性能的影响[J].中国塑料,2018,32(8):25-32. |
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| 作者姓名： | 王瑶 何连诚 柴菁珊 牛丽姣 罗义琳 张秀成 |
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| 作者单位： | 1. 东北林业大学理学院
2. 黑龙江省阻燃材料分子设计与制备重点实验室 |
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| 基金项目： | 东北林业大学大学生创新创业训练计划项目;黑龙江省应用技术研究与开发计划项目 |
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| 摘 要： | 以纳米二氧化硅(nano-SiO2)表面包覆的微晶纤维素(MCC)为填料，采用熔融共混的方法制备了聚乳酸/聚丁二酸丁二醇酯（PLA/PBS）复合材料。运用扫描电子显微镜、热重分析仪、差示扫描量热仪、动态热力学分析仪等方法研究了nano-SiO2对PLA/PBS/MCC复合材料的力学性能、热稳定性以及结晶行为的影响。结果表明，nano-SiO2包覆在MCC表面后与PLA/PBS熔融共混提高了nano-SiO2在聚合物材料中的分散性，改善了MCC与树脂基体的相容性;添加5 %（质量分数，下同）MCC的PLA/PBS/MCC复合材料，与同样添加量的PLA/PBS/nano-SiO2-MCC复合材料相比，其储能模量、冲击强度以及结晶度分别提高了13.04 %、11.70 %、71.92 %。
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| 收稿时间： | 2018-04-24 |
Effect of Nano-SiO2 Wrapping on Microcrystalline Cellulose on the Properties of PLA /PBS Composites |
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| Abstract: | A type of bio-degradable thermoplastic composites was prepared by melt blending PLA and PBS with the nano-SiO2 particles encapsulated with microcrystalline cellulose (MCC). The effect of nano SiO2 on the mechanical property, thermal stability and crystallinity of the composites was investigated by SEM, TGA, DSC and DMA. The experimental results indicated that the encapsulation of nano-SiO2 with MCC enhanced the dispersion of nano-SiO2 particles in the matrix due to an improvement in interfacial compatibility between the matrix resins and fillers by MCC. Compared to the PLA/PBS/MCC compounds containing 5 % MCC, the PLA/PBS/nano-SiO2-MCC composite with 5 % MCC exhibited an increase in storage modulus, impact strength and crystallinity degree by 13.04 %, 11.70 % and 71.92 %, respectively. |
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